explain.depesz.com

PostgreSQL's explain analyze made readable

Result: uZfq

Settings
# exclusive inclusive rows x rows loops node
1. 13.241 13.361 ↑ 1.0 1 1

CTE Scan on prev_ts prv (cost=13.51..13.53 rows=1 width=33) (actual time=13.360..13.361 rows=1 loops=1)

2.          

CTE next_ts

3. 0.002 13.069 ↑ 1.0 1 1

Limit (cost=0.42..9.47 rows=1 width=12) (actual time=13.068..13.069 rows=1 loops=1)

4. 13.067 13.067 ↑ 1,190.0 1 1

Index Scan using timeslot_location_id_time_status_idx on timeslot ts (cost=0.42..10,764.49 rows=1,190 width=12) (actual time=13.067..13.067 rows=1 loops=1)

  • Index Cond: (location_id = 21)
  • Filter: ((item_category_id = 1) AND (status = ANY ('{PUBLISHED,BOOKED,"MARKED TO DELETE"}'::text[])) AND (now() < ("time" + ('00:01:00'::interval * (duration)::double precision))))
  • Rows Removed by Filter: 9,548
5.          

CTE prev_ts

6. 0.000 13.235 ↑ 1.0 1 1

Limit (cost=0.44..3.75 rows=1 width=16) (actual time=13.235..13.235 rows=1 loops=1)

7.          

Initplan (for Limit)

8. 13.074 13.074 ↑ 1.0 1 1

CTE Scan on next_ts (cost=0.00..0.02 rows=1 width=8) (actual time=13.072..13.074 rows=1 loops=1)

9. 13.234 13.234 ↑ 1,190.0 1 1

Index Scan Backward using timeslot_time_index on timeslot ts_1 (cost=0.42..3,933.75 rows=1,190 width=16) (actual time=13.234..13.234 rows=1 loops=1)

  • Index Cond: ("time" < $1)
  • Filter: ((location_id = 21) AND (item_category_id = 1) AND (status = ANY ('{PUBLISHED,BOOKED,"MARKED TO DELETE"}'::text[])))
  • Rows Removed by Filter: 32
10.          

Initplan (for CTE Scan)

11. 0.119 0.119 ↑ 1.0 1 1

CTE Scan on next_ts nxt (cost=0.00..0.28 rows=1 width=32) (actual time=0.118..0.119 rows=1 loops=1)

12. 0.001 0.001 ↑ 1.0 1 1

CTE Scan on next_ts next_ts_1 (cost=0.00..0.02 rows=1 width=8) (actual time=0.001..0.001 rows=1 loops=1)